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RF Filters and Signal Conditioning

RF Filters

RF Filters

Plastic Filter Technology

PPM Systems offers bespoke filter and RF conditioning solutions for satellite communication (satcom), military and other sectors using a range of filtering technologies and custom application, including a wide range of Corry Micronics off the shelf filter products. We can provide individual filters or a complete solution–system integration, as well as filter design, test, evaluation and manufacture.

Systems can include Lumped Element (LC), resonant cavity RF filters and suspended substrate stripline filters. Our RF filters and antenna technology can also be fully integrated into a custom antenna assembly if required.

We recognise the frequent need to support tight timescales and offer a highly responsive service – from fast prototyping, to advice on choosing the best technology.  We also have extensive experience in supporting applications requiring high levels of data security and security clearance.

 

Understanding Different Types of Filter

 

Filter Enquiry

 

Custom RF Filters
PPM Systems can provide the following types of custom filters:

  • Lowpass & highpass filters
  • Bandpass filters
  • Bandstop filters
  • Diplexers
  • Switched bank filters.

 

Understanding Different Types of Filter

 

PPM Systems RF filters
Plastic Filters
PPM Systems can offer a range of plastic housing, metal plated cavity RF Filters, specially designed to save weight over traditional filters. These innovative filters are extremely useful for lightweight applications giving approximately a 50% weight saving compared to aluminium, while maintaining similar electrical characteristics.

The range of Plastic RF Filters includes:

  • Band Pass Filters
  • Diplexers
  • Cavity Power Combiners
  • Notch Filters.

 

Composite Microwave Filters

 

Understanding Different Types of Filter
Corry Micronics Plastic RF Filter
Part Number*Center Frequency (MHz)Bandwidth (MHZ) Fc +/-Bandwidth (MHZ) Insertion Loss (dB) MAXPower Rating (W)VSWR (MAX)
CMIBPF-2450245045900.820
CMIBPF-915-30MP91513260.8201.4
CMIBPF-2437-75MP2475751500.5201.4
CMIBPF-925-50B92535701.52001.3
CMIBNF-1.2-1.65-45-P Notch1.22522.5454575
*Click the product name to view the datasheet
Cavity Filters
​Cavities filters are designed with a number of tuned cavities coupled together. They are capable of high power applications with low insertion loss and high rejection. Ideal for notch filter applications, they can be combined into diplexers and power combiners.

 

Understanding Different Types of Filter
Cavity Filter

 

Cavity Filters

Part Number*Center Frequency (MHz)Bandwidth (MHz) Fc +/-Bandwidth (MHz) Insertion Loss (dB) MAXPower Rating (W)VSWR (MAX)
CLB-BPF-41TXRX27.52.65.21.8102
CMIBPF-47.2-51.4G49.3420084002101.5
CMIBF-165X15-11657.51511801.5
CMIBF-172.3X4-1172.3240.81801.5
CMIBF-220X4-12202411801.5
CMIBPF-33533515300.521.5
CMIBF-390X20-139010201501.4
CMIBF-433-14335102101.5
CMIBF-445X5-14452.550.8201.5
CLB-BPF-1217RX7079182.0101.5
CLB-BPF-13RX7825103.0101.5
CMIF221-CDMA-058305102.0501.22
CLB-BPF-26RX831.517.5352.0101.5
CMIBF-GSM800-184715302101.43
CMIF221-CDMA-068905102.0501.22
CMIBF-GSM900-1897.517.5352101.43
CMIBPF-925-50B92535701.52001.3
CMIBF-G35-1942.517.535251.29
CMIBF-1030X10-110305102.5101.3
CMIBF-1090X10-110905102.5101.3
CMIBF-1290X8-11290480.8201.5
CMIBPF-14381437.917341.3101.3
CMIBF-1450X500-J11450250500321.5
CMIBPF-14551455.47.5151.0101.3
CMIBF-1457X20-1145710201.6101.3
CMIBPF-1680-110W1680801601.01101.4
CMIBF-DCS1800-11747.537.5751.5101.43
CMIBF-1795X20-1179510201.6101.3
CLB-BPF-25RX1882.515301.5101.5
CMIBPF-18821882.532.5651.0101.3
CMIBF-UMTS2100-1195030600.6101.43
CMIBF-WCDMA-11950306011001.29
CMIF221-WCDMA-01195030601.01001.29
CMIBF-WCDMA-F120451252501.62001.3
CMIF221-WCDMA-0214030601.01001.29
CMIF221-TDSCDMA-0421757.5151.2101.22
CMIBF-2282X80-1228240800.51501.5
CMIBF-2300X230-223001152301.2201.3
CMIBPF-2450245045900.8201.22
CMIBF-2475X50-12475250500151.3
CMIBF-LTE2600-1253517.5350.5101.43
CMIBPF-25932593971941.0101.3
LBTX-BPF-412593971940.51001.38
LBTX-BPF-7265535700.71001.38
CMIBF-4525X290-145251452901.9101.25
CMIBF-4990X320-249901603200.45101.25
CMIBF-7144X250-17144.51252501.5101.5
CMIBF-7500X500-175002505001.7551.5
CMIBF-8475X260-18475.51302602101.5
CMIBF-9000X1000-1900050010001101.3
CMIBF-9500X1000-1950050010000.83001.5
9600X400-196002004003101.5
CMIBF-12900X1500129007501500251.5
CMIBF-13000X60001300030006000111.5
CMIBF-13900X1500139007501500251.5
CMIBF-14900X1500149007501500251.5
CMIBF-15000X60001500030006000311.92
CMIBF-15800X460-1158002304603.551.5
CMIBF-16100X1500161007501500251.5
CMIBF-18000X43001800021504300311.92
CMIBF-L7-17079182.9501.3
CMIBF-S8-17079182.9501.3
CMIBF-708X763-17085101.51001.29
CMIBF-CDMA-183051012001.2

Multi-Band Cavity Filters

Part Number*Center Frequency (MHz)Bandwidth (MHz) Fc +/-Bandwidth (MHz) Band 2 Center Frequency (MHz)Bandwidth (MHZ) FC+/-Bandwidth (MHz)Insertion Loss (dB) MAXPower Rating (W)VSWR (MAX)
CMIBF-L7-17079187379182.9501.3
CMIBF-S8-17079187379182.9501.3
CMIBF-708X763-17085107635101.51001.29
CMIBF-CDMA-183051087551012001.2

*Click the product name to view the datasheet

Strip line Filters
These ceramic based and high frequency RF filters are extremely robust and light-weight which make them a perfect solution for airborne applications. Strip line filters are available in the frequency range from DC to 40 GHz with power handling to 15 watts. They can be packaged as Surface Mountable (SMT), Drop-In or connectorised in housings either hermetically or non-hermetically sealed.

  • Wide frequency range
  • High Reliability High “Q”
  • Low Loss
  • High Rejection

 

Understanding Different Types of Filter

 

Strip Line Filter
Part Number*Passband (GHz)Rejection (dB @ GHz)Power (W)VSWR
CMIF0020A-LSDC-2>50dB @ 2.5-1310<1.3:1
CMIF0060-LSDC-5.4>45dB @6.9-1415<1.5:1
CMIF00110-LSDC-9.9>45dB @12.5-17.515<2.0:1
CMIF3882-BS3.8-8.2>30dB @ 3.3
>30dB @ 9
5<2.0:1
CMIF15130-HS1.5-13>50dB @ DC-1102.0:1
CMIF20180-HS43132>50dB @ DC-1.510<2.0:1
CMIF30130-HS41334>60dB @ DC-2.510<2.0:1
CMIBPF-23G-2G22-24>50dB @ 15.5
>30dB @ 27
10<1.5:1

*Click the product name to view the datasheet

LC (Lumped Element) Filters
LC or Lumped Element filters provide the desired frequency response using inductors (L`s) and capacitors (C`s). LC filters are perhaps the most familiar filter type to most engineers. They are small and low cost but low power handling and higher insertion loss compared to cavity filters.

 

Understanding Different Types of Filter
LC Lumped Element Filter
Part Number*Center Frequency (MHz)Bandwidth (MHz) Fc +/-Bandwidth (MHz) Insertion Loss (dB) MAXPower Rating (W)VSWR (MAX)
CMIBPF-152-20M1541020211.43
CMIBPF-158-6M15836311.43
CMIDBPF-703-748M725.522.545511.5
CMIDBPF-758-803M780.522.545311.5
CMIDBPF-791-821M8061530311.5
CMIDBPF-814-849M831.517.535511.5
CMIBPF-0.825-0.86G842.517.535311.5
CMIDBPF-832-862M8471530511.5
CMIDBPF-859-894M876.517.535311.5
CMIDBPF-880-915M897.517.535411.5
CMIBPF-925-960M942.517.535311.5
CMIBPF-16501650250500311.8
CMIDBPF 1.71-1.7851747.537.575511.5
CMIDBPF-1710-17801747.53570511.5
CMIBPF-1800180050100611.5
CMIBPF-1.8-1.88G1842.537.575311.5
CMIBPF-1850185050100611.5
CMIDBPF-1850-19151882.532.565511.5
CMIBPF-190019005001000211.5
CMIDBPF-1930-19951962.532.565311.5
CMIDBPF 1.92-2.01G19654590311.5
CMIBPF-2.11-2.2G21554590311.5
CMIDBPF-2110-220021554590311.5
CMIDBPF-2300-2400235050100511.5
CMIDBPF-2.5-2.57G25353570411.5
CMIBPF-2.62-2.69G26553570311.5
CMIBPF-19G-25M19171.512.5252.511.5
CMIBPF-29G-45M29218.522.5452.511.5

*Click the product name to view the datasheet

Diplexers and Multiplexers
By using different filter types, designs can be optimised to each customer’s multiplexing requirements.

 

Combining RF Signals

 

Corry Micronics Diplexer Multiplexer
Part Number*Frequency (MHz)Designed for SystemsInsertion Loss (dB Max)Insertion Loss (dB Typ)Passband Ripple (dB Max, p-p)Return Loss (dB)Stopband Attenuation (dB)
CMIF228-CDMA&GSM-02825- 880
909 – 960
CDMA/GSM0.80.50.51470 Relative
65 Relative
CMIF228-CDMA&GSM-05825 – 835
870 – 880
909 – 915
954 – 960
CDMA/GSM1.81.60.51880 (CDMA Up to Down)
90 (GSM Up to Down)
CMIF228-CDMA&GSM-07825 – 880
909 – 960
CDMA/GSM0.80.50.51888 Relative
88 Relative
CMIF228-GSM-01909 – 915
954 – 960
GSM10.60.51890 @ Channel
CMIF228-GSM-04890 – 915
835 – 960
GSM1.81.50.51870 @ Channel
CMIF228 – CDMA-07825 – 835
870 – 880
CDMA1.51.20.5188 (+/- 7.5 MHz)
90 @ Channel
CMIF228-CDMA-061920 – 1980CDMA10.80.51845 (1900 – 2000 MHz)
90 (2110 – 2170 MHz)
CMIF228-WLAN&PHS-011885 – 1920
2400 – 2483
WLAN/PHS10.60.61875 @ Channel
CMIF228-WCDMA-011920 – 1980
2110 – 2170
WCDMA10.80.51845 (1900 /2000 MHz)
45 (2190/2090 MHz)
90 @ Channel

*Click the product name to view the datasheet

Hybrid Diplexers
These hybrid diplexers are unique because they use the entire frequency band by either notching or passing the frequencies. They are also great for testing the quality of an amplifier or chip set by seeing in band and out of band signals. They have an ultra low noise floor and allow for the ability to search for harmonics.

 

Corry Micronics Diplexer Multiplexer
Part number*Input Freq. Range (GHz)Freq. Range (MHz)Band Pass Insertion LossBand Reject Insertion LossBand Pass RejectionBand Reject Rejection
CMIBFNF-4400-50002 - 84400 - 50002.5 dB Max2 dB @ 2000 - 3900 MHz
4 dB @ 5500 - 8000 MHz
55 dB40 dB Min
CMIBFNF-5.0-6.0G2 - 85000 - 60003 dB Max3 dB @ 2000 - 4100 MHz
4 db @ 7200 - 8000 MHz
55 dB40 dB Min
CMIBFNF-3.3-4.2G2 - 83300 - 42002.5 dB Max2 dB @ 2000 - 3100 MHz
4 dB @ 4500 - 8000 MHz
55 dB40 dB Min
CMIBFNF-2496-26902 - 82496 - 26902.5 dB Max2 dB @ 2000 - 2350 MHz
4 dB @ 2840 - 8000 MHz
55 dB40 dB Min

*Click the product name to view the datasheet

Broadband Diplexers
The CMIDX series of high-power broadband diplexers are capable of handling input power of up to 150 watts, ideal for signal combining applications such as:

  • jamming
  • communication systems
  • re-broadcasting signals
  • multiband antenna systems with a common seeder.

The passbands, temperature range and input power can be customised for each application. The diplexers are compact in size and offer constant VSRW through the band and the cross over region, as well as temperature stability across the frequency band.

The broadband diplexers feature:

  • An impedance of 50 Ω
  • A customisable passband frequency range of 2-6 GHz or 8-18 GHz
  • N-Female connectors
  • A rejection band attenuation of 40 dB MIN.
CMIDX series broadband diplexer
CMIDX Series Datasheet
Cavity Triplexers
Cavity Triplexers are bi-directional devices consisting of 3 bandpass filters (L-Band, S-Band and C-Band) and are designed with a bulkhead “N” connector for easy mounting to a bulkhead. They are very compact in size and offer extremely high channel to channel isolation greater than 90 dB. The triplexers allow all filters to be combined into one common port.

 

Corry cavity triplexer bi-directional
Switch Filter BankProductCMIMUX3-90DB-03A
DescriptionCavity Triplexer
BandsL-Band: 1350~1390 MHz
S-Band: 2200~2400 MHz
C-Band: 4400~5000 MHz
DatasheetDownload
Switch Filter Bank

Switch Filter Banks offer low insertion loss and fast switching speeds. There are a variety of filter types available including strip line, LC, cavity and much more.

  • Passband Frequency of 10 MHz to 40 GHz
  • Up to 10 channels
  • Low insertion loss of less than 5 dB (typical)
  • Fast switching speeds of 100 ns
  • Adjustable mechanical form factor to drop-in custom space
  • Rejection of 60 dB min
  • Power supply +5VDC typical
  • Optional low noise amplification

 

Switch Filter BankProductCMIINV-5BT2-RM
DescriptionMulti Switch Bank Filter for US LTE and GSM bands
BandsLTE2100
PCS-1900
GSM 850
Upper 700 MHz
Lower 700 MHz
DatasheetDownload
Switch Filter BankProductCMIINV-5BLTE-RM
DescriptionMulti Band Cellular Switch Bank Filter
BandsBand 1
Band 3
Band 7
Band 8
Band 20
DatasheetDownload
Switch Filter BankProductCMISFB-80180T4
DescriptionMulti Switch Bank Filter
Bands8 - 10 GHz
10 - 12 GHz
12 - 15 GHz
15 - 18 GHz
DatasheetDownload

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